OpenAI has released GPT‑5.2-Codex, the most advanced agentic coding model yet for complex, real-world software engineering.

OpenAI announced on Friday it’s launching a research preview of Codex, the company’s most capable AI coding agent yet. Codex is powered by codex-1, a version of the company’s o3 AI reasoning model ...

OpenAI has already made some big changes to Codex, the AI-powered coding assistant the company announced last month. The system now accepts commands in plain English and outputs live, working code, ...

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